Question

One of the four angles formed by two intersecting
lines is a right angle. Show that the other three
angles will also be right angles.​

Answer 1

Answer:

Let AB and CD be two lines Intersecting at O, such that, ∠AOD=90

∘

Now, ∠AOD=∠COB=90

∘

(Vertically opposite angles)

⟹∠AOD+∠DOB=180

o

(Angles on a straight line)

⟹90+∠DOB=180

o

∠DOB=90

∘

∠DOB=∠AOC=90

∘

(Vertically opposite angles)

Thus, all angles are 90

Step-by-step explanation:

Please mark my answer as brainliest and follow